Skip to Main Content
Sam's Club
Sam's Club
All Departments
All Services
Customer reviews for ONNIT Alpha BRAIN Nootropic Brain Health Supplement Capsules, 78 ct. for
ONNIT Alpha BRAIN Nootropic Brain Health Supplement Capsules, 78 ct.
3.8 out of 5 stars
stars
12K ratings11.9K reviews
  1. 5 stars52% (6,258)
  2. 4 stars15% (1,793)
  3. 3 stars10% (1,251)
  4. 2 stars7% (859)
  5. 1 star16% (1,909)

Member photos

Sort by |
Showing 6,791-6,800 of 11,986 reviews
Aug 26, 2024
Reviewer name: haileyl43
5 out of 5 stars
5 out of 5 stars review

Already works

[This review was collected as part of a promotion.] I received this free to review from influencer. It comes in nice packaging and it luckily doesn't have an awful taste like most supplements do no harsh ingredients. And believe it or not I can already tell a difference about a month in. I'll continue to buy.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 4, 2025
Reviewer name: feliciar56_9424
5 out of 5 stars
5 out of 5 stars review

They do help

[This review was collected as part of a promotion.] The don't really have a taste. And they do work really well. I like the simple packaging. It seems to have pretty much natural ingredients. And they aren't high priced like other memory helpers. I will be buying.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Aug 20, 2024
Reviewer name: mrsjt87
4 out of 5 stars
4 out of 5 stars review

Powerful alert pill!!

[This review was collected as part of a promotion.] DISCLAIMER: I received these products free from Influenster in exchange for my honest review. So these supplements are suppose to assist in memory function and alertness and cognitive abilities. Now, I have only been using this product for a little shy of two weeks while it does not work instantly I have noticed peaks of alertness and burst of energy. Maybe more would develop with continuous prolonged use. Only thing I would stress on is please take this with food just to avoid an upset stomach like I did. Also is made with all natural ingredient so no harsh side effects at least not on my end

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jul 22, 2025
Reviewer name: citlallib8_2979
3 out of 5 stars
3 out of 5 stars review

Whether I’m trying to stay productive, remember ta

[This review was collected as part of a promotion.] I’ve been taking Onnit Alpha BRAIN for a little while now, and it’s made a noticeable difference in my focus and mental clarity. What I love is that it’s caffeine-free, so I don’t get any jitters or crashes — just a calm, clear mind. It’s helped me stay more mentally sharp, especially when I have a lot on my plate. Whether I’m trying to stay productive, remember tasks, or just focus better throughout the day, Alpha BRAIN really supports that. It promotes memory, focus, and mental processing, and I’ve definitely felt more “in the zone” when I take it regularly. If you’re looking for something to help your brain work better without the side effects of stimulants, this is a solid option!

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jun 17, 2025
Reviewer name: yasirm2_5470
5 out of 5 stars
5 out of 5 stars review

Focus and Alertness without caffeine.

[This review was collected as part of a promotion.] I've been using Alpha Brain supplements for a while now, and I've noticed a clear improvement in my memory and ability to learn. As a computer science student, I often felt mentally drained and struggled to stay focused during studies and projects. However, since taking Alpha Brain once a day, my attention span has significantly improved, and the fatigue I used to experience has lessened. I haven’t had any side effects or discomfort, and overall, it's been a great and effective alternative to caffeine.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 20, 2025
Reviewer name: anas928_3630
1 out of 5 stars
1 out of 5 stars review

Made me feel sick

[This review was collected as part of a promotion.] Onnit Alpha Brain capsules help support memory and focus on a daily basis. These capsules were not suitable for me. I took them as directed. Serving size is two capsules daily and taken with a light meal. I took these capsules one time and I had a really bad side effect. After three hours of taking them, I felt nauseated, with a headache and felt weak. They made me feel sick for a day. I will not continue taking these capsule after this bad experience.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
reply from Customer Service

Thank you for sharing your experience with this formula, we’re sorry to hear that it wasn’t a positive one! Everyone's experience with supplementation is unique to them, and we would like to learn more about yours. You will be contacted by someone on our Customer Service team shortly so we can support you directly in this matter.

Apr 26, 2025
Reviewer name: crystalv120_881
4 out of 5 stars
4 out of 5 stars review

Helps the brain

[This review was collected as part of a promotion.] These pills definitely helped out with memory. Sometimes I struggle with words and that desperately lessened after 3 weeks of taking these. Don’t have a nasty taste and the packaging is simple enough.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jun 29, 2025
Reviewer name: leticiase312_8614
5 out of 5 stars
5 out of 5 stars review

Great supplements

[This review was collected as part of a promotion.] If you’re looking for supplements that supports focus, memory, and mental clarity without caffeine, Alpha Brain is worth trying — just be mindful of how your body reacts and whether the results justify the price for you. I been taking it for 1 week and I notice a difference I felt more focused throughout my work day.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Jun 9, 2025
Reviewer name: audrinah6_6360
5 out of 5 stars
5 out of 5 stars review

Supports memory and focus!

[This review was collected as part of a promotion.] The Onnit Alpha BRAIN is fantastic for supporting memory and focus. This is a daily option that you can discuss with your doctor. The value for money is great, as is the taste! The packaging is easy to open and reclose. I think the product is effective as I have been able to improve my focus. The ingredients are listed on the bottle.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153
Apr 3, 2025
Reviewer name: jenn_savvy_7301
4 out of 5 stars
4 out of 5 stars review

Good Supplement

[This review was collected as part of a promotion.] Alpha Brain has empowered me to unlock my full potential, keeping me focused and alert. I've noticed a profound transformation in my ability to concentrate, especially during demanding tasks. It has helped me feel sharper and more alert throughout the day. I utilize Alpha Brain while studying. The taste is okay. Product packing is the same as other vitamins.

Review from onnit.com
Helpful?1KJFR6XS8BD413614914153